from time import sleep, ctime

def loop0():
  print 'start loop0 at:', ctime()
  sleep(4)
  print 'loop 0 done at:', ctime()

def loop1():
  print 'start loop1 at:', ctime()
  sleep(2)
  print 'loop 1 done at:', ctime()

def main():
    print 'starting at:',ctime()
    loop0()
    loop1()
    print 'all done at:',ctime()

if __name__ == '__main__':
    main()
          
